/*
 * php4.swg
 *
 * PHP4 runtime library
 *
 */

#ifdef __cplusplus
extern "C" {
#endif
#include "zend.h"
#include "zend_API.h"
#include "php.h"

/* These TSRMLS_ stuff should already be defined now, but with older php under
   redhat are not... */
#ifndef TSRMLS_D
#define TSRMLS_D
#endif
#ifndef TSRMLS_DC
#define TSRMLS_DC
#endif
#ifndef TSRMLS_C
#define TSRMLS_C
#endif
#ifndef TSRMLS_CC
#define TSRMLS_CC
#endif

#ifdef __cplusplus
}
#endif

/* But in fact SWIG_ConvertPtr is the native interface for getting typed
   pointer values out of zvals.  We need the TSRMLS_ macros for when we
   make PHP type calls later as we handle php resources */
#define SWIG_ConvertPtr(obj,pp,type,flags) SWIG_ZTS_ConvertPtr(obj,pp,type,flags TSRMLS_CC)

/* Flags for SWIG_ConvertPtr */
#define SWIG_POINTER_DISOWN  0x1

#define SWIG_fail goto fail

static char *default_error_msg = "Unknown error occurred";
static int default_error_code = E_ERROR;

#define SWIG_PHP_Arg_Error_Msg(argnum,extramsg) "Error in argument " #argnum " "#extramsg

#define SWIG_PHP_Error(code,msg) ErrorCode() = code; ErrorMsg() = msg; SWIG_fail;

#define SWIG_contract_assert(expr,msg) \
  if (!(expr) ) { zend_printf("Contract Assert Failed %s\n",msg ); } else

/* Standard SWIG API */
#define SWIG_GetModule(clientdata) SWIG_Php4_GetModule()
#define SWIG_SetModule(clientdata, pointer) SWIG_Php4_SetModule(pointer)

/* used to wrap returned objects in so we know whether they are newobject
   and need freeing, or not */
typedef struct _swig_object_wrapper {
  void * ptr;
  int newobject;
} swig_object_wrapper;

/* empty zend destructor for types without one */
static ZEND_RSRC_DTOR_FUNC(SWIG_landfill) {};

#define SWIG_SetPointerZval(a,b,c,d) SWIG_ZTS_SetPointerZval(a,b,c,d, SWIG_module_entry TSRMLS_CC)

static void
SWIG_ZTS_SetPointerZval(zval *z, void *ptr, swig_type_info *type, int newobject, zend_module_entry* module_entry TSRMLS_DC) {
  swig_object_wrapper *value=NULL;
  /*
   * First test for Null pointers.  Return those as PHP native NULL
   */
  if (!ptr ) {
    ZVAL_NULL(z);
    return;
  }
  if (type->clientdata) {
    if (! (*(int *)(type->clientdata)))
      zend_error(E_ERROR, "Type: %s failed to register with zend",type->name);
    value=(swig_object_wrapper *)emalloc(sizeof(swig_object_wrapper));
    value->ptr=ptr;
    value->newobject=newobject;
    ZEND_REGISTER_RESOURCE(z, value, *(int *)(type->clientdata));
    return;
  } else { /* have to deal with old fashioned string pointer?
              but this should not get this far */
    zend_error(E_ERROR, "Type: %s not registered with zend",type->name);
  }
}

/* This is a new pointer conversion routine
   Taking the native pointer p (which would have been converted from the old
   string pointer) and it's php type id, and it's type name (which also would
   have come from the old string pointer) it converts it to ptr calling 
   appropriate casting functions according to ty
   Sadly PHP has no API to find a type name from a type id, only from an instance
   of a resource of the type id, so we have to pass type_name as well.
   The two functions which might call this are:
   SWIG_ZTS_ConvertResourcePtr which gets the type name from the resource
   and the registered zend destructors for which we have one per type each
   with the type name hard wired in. */
static int
SWIG_ZTS_ConvertResourceData(void * p, int type, const char *type_name, void **ptr, swig_type_info *ty TSRMLS_DC) {
  swig_cast_info *tc;

  if (ty) {
    if (! type_name) {  
      /* can't convert p to ptr type ty if we don't know what type p is */
      return -1;
    } else {
      /* convert and cast p from type_name to ptr as ty
         Need to sort out const-ness, can SWIG_TypeCast really not take a const? */
      tc = SWIG_TypeCheck((char *)type_name,ty);
      if (!tc) return -1;
      *ptr = SWIG_TypeCast(tc, (void*)p);
    }
  } else {
    /* They don't care about the target type, so just pass on the pointer! */
    *ptr = (void *) p;
  }
  return 0;
}

/* This function fills ptr with a pointer of type ty by extracting the pointer
   and type info from the resource in z.  z must be a resource
   It uses SWIG_ZTS_ConvertResourceData to do the real work. */
static int
SWIG_ZTS_ConvertResourcePtr(zval *z, void **ptr, swig_type_info *ty, int flags TSRMLS_DC) {
  swig_object_wrapper *value;
  void *p;
  int type;
  char *type_name;

  value = (swig_object_wrapper *) zend_list_find(z->value.lval,&type);
  if ( flags && SWIG_POINTER_DISOWN ) {
    value->newobject = 0;
  }
  p = value->ptr;
  if (type==-1) return -1;

  type_name=zend_rsrc_list_get_rsrc_type(z->value.lval TSRMLS_CC);

  return SWIG_ZTS_ConvertResourceData(p,type,type_name,ptr,ty TSRMLS_CC);
}

/* We allow passing of a STRING or RESOURCE pointing to the object
   or an OBJECT whose _cPtr is a string or resource pointing to the object
   STRING pointers are very depracated */
static int
SWIG_ZTS_ConvertPtr(zval *z, void **ptr, swig_type_info *ty, int flags TSRMLS_DC) {
   char *c;
   zval *val;
   
   if(z == NULL) {
	*ptr = 0;
	return 0;
   }

   if (z->type==IS_OBJECT) {
     zval ** _cPtr;
     if (zend_hash_find(HASH_OF(z),"_cPtr",sizeof("_cPtr"),(void**)&_cPtr)==SUCCESS) {
       /* Don't co-erce to string if it isn't */
       if ((*_cPtr)->type==IS_STRING) c = Z_STRVAL_PP(_cPtr);
       else if ((*_cPtr)->type==IS_RESOURCE) {
         return SWIG_ZTS_ConvertResourcePtr(*_cPtr,ptr,ty, flags TSRMLS_CC);
       } else goto type_error; /* _cPtr was not string or resource property */
     } else goto type_error; /* can't find property _cPtr */
   } else if (z->type==IS_RESOURCE) {
     return SWIG_ZTS_ConvertResourcePtr(z,ptr,ty, flags TSRMLS_CC);
   } if (z->type==IS_NULL ) {
     *ptr = 0;
     return 0;
   } else goto type_error;

type_error:

    return -1;
}

static char const_name[] = "swig_runtime_data_type_pointer";
static swig_module_info *SWIG_Php4_GetModule() {
  zval *pointer;
  swig_module_info *ret = 0;

  MAKE_STD_ZVAL(pointer);

  if (zend_get_constant(const_name, sizeof(const_name), pointer)) {
    if (pointer->type == IS_LONG) {
      ret = (swig_module_info *) pointer->value.lval;
    }
  } 
  return 0;
}

static void SWIG_Php4_SetModule(swig_module_info *pointer) {
  REGISTER_MAIN_LONG_CONSTANT(const_name, (long) pointer, 0);
}